CaO+CO2=CaCO3
CaO+H2SO4=CaSO4↓+H2O
CO2+2 NaOH = Na2CO3+H2O
H2SO4+2 NaOH =Na2SO4+2H2O
CuSO4+2 NaOH=Cu(OH)2↓+Na2SO4
BaCl2+H2SO4=BaSO4↓+2HCl
BaCl2+2 NaOH=Ba(OH)2↓+2NaCl
BaCl2+CuSO4=BaSO4↓+CuCl2
CaO+CO2=CaCO3
CaO+H2SO4=CaSO4↓+H2O
CO2+2 NaOH = Na2CO3+H2O
H2SO4+2 NaOH =Na2SO4+2H2O
CuSO4+2 NaOH=Cu(OH)2↓+Na2SO4
BaCl2+H2SO4=BaSO4↓+2HCl
BaCl2+2 NaOH=Ba(OH)2↓+2NaCl
BaCl2+CuSO4=BaSO4↓+CuCl2